Do you mean like 81/100 or like 81/1
Answer:
So we can find this probability:
And then since the interest is the probability that the mean diameter of the sample shafts would differ from the population mean by more than 0.3 inches using the complement rule we got:
Step-by-step explanation:
Let X the random variable that represent the diamters of interest for this case, and for this case we know the following info
Where and
We can begin finding this probability this probability
For this case they select a sample of n=79>30, so then we have enough evidence to use the central limit theorem and the distirbution for the sample mean can be approximated with:
And the best way to solve this problem is using the normal standard distribution and the z score given by:
And we can find the z scores for each limit and we got:
So we can find this probability:
And then since the interest is the probability that the mean diameter of the sample shafts would differ from the population mean by more than 0.3 inches using the complement rule we got:
Answer:
doing it
Step-by-step explanation:
<h3>
Answer: 56 minutes</h3>
1 hour = 60 minutes
The time values given, in minutes, are:
25, 55, 60, 94, and 46
going from monday to friday in that exact order
Add up the values, then divide by 5. This is because there are 5 values
So adding up the values gets us: 25+55+60+94+46 = 280
Then dividing by 5 leads to this answer: 280/5 = 56
note: you must convert the "1 hour" to "60 minutes" because each time value must be in the same units. Otherwise, its like mixing apples and oranges which makes no sense.